var str = new String('hello');
console.log("🚀 ~ str:", str)
var str2 = "hello";
console.log("🚀 ~ str2:", str2);
console.log("🚀 ~ str.length:", str.length);
console.log("🚀 ~ str2.length:", str2.length);

var stu1 = {
    //属性
    name:"s1",
    age:10,
    gender:"男",
    likes:['篮球','乒乓球','吉他','照相'],
    //方法
    eat:function() {
        console.log("公主请吃饭");
    }
}
console.log("🚀 ~ stu1.name:", stu1.name);
stu1.eat();
